| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.18 |
| Score | 0% | 64% |
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 15% off." If Monty buys two shirts, each with a regular price of $11, how much will he pay for both shirts?
| $15.95 | |
| $20.35 | |
| $1.65 | |
| $13.75 |
By buying two shirts, Monty will save $11 x \( \frac{15}{100} \) = \( \frac{$11 x 15}{100} \) = \( \frac{$165}{100} \) = $1.65 on the second shirt.
So, his total cost will be
$11.00 + ($11.00 - $1.65)
$11.00 + $9.35
$20.35
10 members of a bridal party need transported to a wedding reception but there are only 4 2-passenger taxis available to take them. How many will need to find other transportation?
| 4 | |
| 6 | |
| 2 | |
| 8 |
There are 4 2-passenger taxis available so that's 4 x 2 = 8 total seats. There are 10 people needing transportation leaving 10 - 8 = 2 who will have to find other transportation.
What is 4\( \sqrt{3} \) x 4\( \sqrt{5} \)?
| 16\( \sqrt{15} \) | |
| 16\( \sqrt{8} \) | |
| 8\( \sqrt{15} \) | |
| 8\( \sqrt{3} \) |
To multiply terms with radicals, multiply the coefficients and radicands separately:
4\( \sqrt{3} \) x 4\( \sqrt{5} \)
(4 x 4)\( \sqrt{3 \times 5} \)
16\( \sqrt{15} \)
Which of these numbers is a factor of 72?
| 21 | |
| 18 | |
| 4 | |
| 24 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72.
What is the greatest common factor of 64 and 80?
| 16 | |
| 63 | |
| 37 | |
| 47 |
The factors of 64 are [1, 2, 4, 8, 16, 32, 64] and the factors of 80 are [1, 2, 4, 5, 8, 10, 16, 20, 40, 80]. They share 5 factors [1, 2, 4, 8, 16] making 16 the greatest factor 64 and 80 have in common.